diff --git a/tools/internal_ci/linux/grpc_e2e_performance_gke.sh b/tools/internal_ci/linux/grpc_e2e_performance_gke.sh
index 89d37f292a4..5b2b072c517 100755
--- a/tools/internal_ci/linux/grpc_e2e_performance_gke.sh
+++ b/tools/internal_ci/linux/grpc_e2e_performance_gke.sh
@@ -128,6 +128,7 @@ time ../test-infra/bin/prepare_prebuilt_workers \
 time ../test-infra/bin/runner \
     -i "../grpc/loadtest_with_prebuilt_workers_${WORKER_POOL_8CORE}.yaml" \
     -i "../grpc/loadtest_with_prebuilt_workers_${WORKER_POOL_32CORE}.yaml" \
+    -polling-interval 5s \
     -delete-successful-tests \
     -c "${WORKER_POOL_8CORE}:2" -c "${WORKER_POOL_32CORE}:2" \
     -o "runner/sponge_log.xml"
diff --git a/tools/internal_ci/linux/grpc_e2e_performance_gke_experiment.sh b/tools/internal_ci/linux/grpc_e2e_performance_gke_experiment.sh
index 4e85cd3f6ce..27f46be75e5 100755
--- a/tools/internal_ci/linux/grpc_e2e_performance_gke_experiment.sh
+++ b/tools/internal_ci/linux/grpc_e2e_performance_gke_experiment.sh
@@ -126,6 +126,7 @@ time ../test-infra/bin/prepare_prebuilt_workers \
 time ../test-infra/bin/runner \
     -i "../grpc/loadtest_with_prebuilt_workers_${WORKER_POOL_8CORE}.yaml" \
     -i "../grpc/loadtest_with_prebuilt_workers_${WORKER_POOL_32CORE}.yaml" \
+    -polling-interval 5s \
     -delete-successful-tests \
     -c "${WORKER_POOL_8CORE}:2" -c "${WORKER_POOL_32CORE}:2" \
     -o "runner/sponge_log.xml"